John bryan



UNITED STATES PATENT OFFICE.

JOHN BRYAN, OF COVINGTON, KENTUCKY.

APPLICATION OF HOT WATER TO JOURNALS OF ROLLING-MILLS.

Specification of Letters Patent No. 18,674, dated November 24, 1857'.

To all whom it may concern:

Be it known that I, JOHN BRYAN, of Covington, in the county of Kentonand State of Kentucky, have invented a new and useful Improvement toPrevent the Breaking of Rolls for Rolling Metal IVhen the Metal is in aHeated State When Being Rolled; and I do hereby declare that thefollowing is a full and exact description thereof, reference being hadto the accompanying drawings and to the letters of reference markedthereon and made to form part of this specification.

Similar letters refer to like parts of the improvement.

The object of my improvement is to keep the journals of t-he rolls asnear as possible the same temperature as the body of the rolls whenrolling metals in a heated state without rendering the rolls liable tobreak, and the improvement consists in the use an d application ofheated water to the journals of rolls when the rolls are being used forrolling metals in a heated state (which hot metals cause the rolls toheat) for the purpose of keeping the temperature of the journals of therolls as near the temperature of the heated portion or body of the rollas possible to prevent the rolls from breaking at that part when theournals are united to the body of the rolls by the reaction of theparticles of the metal at that particular point when the journals andbody of the rolls are different temperatures, which is the case when thejournals are kept cold.

In rolling out wrought iron, and particular sheet metal of all kindswhich is required to be in a heated state during the op- 4 eration ofrolling as usual, to render it as easy to roll as possible, but whichheats the rolls so much as to render it necessary to stop operation forthe rolls to cool off particularly in rolling sheet metals, as itrequires too much power to operate the rolls when in a heated state andsubjects them to breaking for reasons before mentioned owing to thegreat stress on the rolls when in operation and for the want of somesuitable method-that would heat the journals of the rolls withoutburning by the heat attracted to the journals from the body of the rollstogether with that produced by the friction on the journals of the rollsby their own operation.

It is a common thing among rollers to use cold water on the journals ofthe rolls to prevent them from heating to obviate the difficulties abovementioned and prevent burning the lubricating material, but the use ofcold water causes the journals to break ofi' with the immense stressthey are subject to particularly in rolling sheet metals owing to thejournals being made comparatively cold while the body of the roll isquite hot which produces a reaction in the particles of the metal of therolls where the journals or neck of the rolls are united to the body ofthe roll, or that portion of it used and made hot in rolling t-he iron,and many have tried to obviate the difficulty of the rolls breaking asmentioned above by using as little cold water as possible, in connectionwith some good lubricating mixture or material, but never met with anysuccess worthy of practical not-ice, as the rolls have continued tobreak as readily as ever when a sufficient quantity of cold water inconnection with theI lubricating mixture was applied to produce anybeneficial result. Thus owing to the heating of the journals of therolls as above mentioned particularly in rolling sheet metal, itprevents the operators from working continually, losing from a 2,' to oftheir time more or less, which results in a. great loss to the owners ofthe mill on account of not being able to work continually, and requiresas much again power to do the same quantity of work and causes thejournals of the rolls to wear out rapidly together with the bearingboxes in which they run, and requires an undue quantity of lubricatingmaterial for the journals when in operation to counteract the heatsufficient to prevent it from burning and have a proper effect on thejournals in lubricating, and then with all the quantity and care emitsan oiensive odor by being unduly heated and sometimes burned, whichsickens the operators, and the worst of all is the rolls break as andfor reasons before mentioned, which they will notl do with an effectualuse and application of heated water, and when the heated water is usedit does not require over one twentieth part as much lubricating materialfor the journals by actual experience as it does when the heated wateris not used, and the best lubricating material employed that is known tothe arts.

To enable others skilled in the art to make an application of myimprovement I will proceed to describe-the manner of applying it byreferring direct to the accompanying drawings of which- Y Figure lrepresents a front View of a pair of sheet rolls. Fig. 2 is an end Viewof the same. Fig. 3 is a sectional view of one of the housing in whichthe rolls work and Fig. 4L, is a roll drawn to itself for illustratingthe effect of the application of the improvement.

rIhere is nothing new in the structure of the rolling machinery, but isonly represented to show the manner of applying and operating theimprovement. o

A A represents the housing in which the rolls B, B, work and which arefurnished with bearing boxes c, cl, and c, e, as represented in Fig. 2.The boX CZ on the top of the roll is let into the cross piece (m) whichcross piece is prevented from coming out by recessing the housing asrepresented in Fig. 3. I

f 7" and g, g, are the set screws and v handles employed for adjustingthe rolls B, B, apart. The power for operating the rolls isapplied tothe end of one of them, which causes the other to revolve by thefriction produced by the contact of the two rollers, and by the metalbeing rolled.

t, 71 is a pipe passing along and above the foundation plate s, s, andbelow the lower roll, from which there are branch pipes 7c, if,project-ing up and furnished with stop cocks to regulate the flow ofwater and the pipes 7c, 7c, are bent at the ends, and the bent parts areprojected over the journals of the top roll and perforated with holes,out of which the heated water flows on the journals as is fullyrepresented in Fig. l, the quantity admitted to the journals beingregulated by the stop cocks J, and the water runs fromV the journals ofthe upper roll to the journals of the lower roll and produces thedesired eect on the journals of the lower roll, as well as the journalsof the upper roll. Y j

(W) is the iow of water from journal to journal represented in Fig. 2.The pipe L, 72 leads from a heating apparatus for heating the water tothe ro-lls, and it has been found that the hotter the water is used thebetter it produces the effect intend-ed,

but I do not conne myself to any particular temperature of water forapplying to the journals of the rolls but consider my im-V provement toembrace all temperatures that will produce the eect I claim with the useof heated water.

In applying the improvement I have taken the water from the boileremployed in the mill for generating steam for supplying the engine usedfor working the machinery by attaching the pipe to the boiler and layingit over the mill at any place where the heated water is required andapply it to the ournals of the rolls in the manner before speciiied.

Fig. 4 represents a roll showing its journals together with the generalform of the roll, which are subject to breaking from the body of theroll where the journals are united to the roll at B, R, when any of theordinary methods of lubricating are used, which requires the ournals tobe kept comparatively cold for 'the lubricating to have the propereffect while the body of the roll is hot which causes a reaction in theparticles of metal at the points R by the journal being comparativelycold which causes it to contract while the body B of the roll to itsends is hot, which causes it to expand, and thereby produce a reactionas beforestated that results in breaking the rolls as before mentioned.But with the use and application of hot water the evil is remedied bykeeping the temperature of the journals of the rolls as near as possiblethe temperature of the body of the roll, as' before stated andwhichheatedv water serves as a lubricator at the same time and does notrequire in connection with it, over one twentieth part of thelubricating material that is used in the best known methods oflubricating the journals of rolls employed for rolling iron in a heatedstate.

Having thus fully described and set forth the nature and object of myinvention, I would state that I am aware that, cold water has been usedas a lubricator for journals; and although I do not know that hot waterhas ever been used for this purpose, viz: lubricating, yet I make noclaim to it as such in this application. But

lhat I do claim as new, and desire to secure by Letters Patent, is-

Equalizing the temperature of rollers and their journals, that areusedin rolling hot iron, or other heated work, by means of hot waterapplied to said journals, for the purpose of making the ber of the metalof which the rolls and journals are made, more uniform at their point ofjunction, and thus lessen the liability of their breaking or separatingat that point, as herein described.Y

JOHN BRYAN;

